Vibratory Ice Protection for Helicopter Rotor Blades.

Abstract

This report presents the results of a study on vibrational deicing of main and tail rotor blades through higher harmonic shaking of the blades with aerodynamic, mechanical, and hydraulic shakers. Studies were made of various locations for mounting shakers, the forces and frequencies to deice, types of shakers, concept effectiveness, energy requirements, system reliability, system maintainability, weights, costs, aircraft performance penalties, impact on countermeasure methods, effects on aircraft components, and applicability to main and tail rotor blades of both metal and composite construction. Ratings of systems to vibrate blades are compared; electrical control diagrams for shaker mechanisms are presented; and results of a breadboard test are included. A bibliography is presented of reports pertinent to vibrational deicing of rotor blades. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1978
Accession Number
ADA057329

Entities

People

  • H. E. Lemont
  • H. Upton

Organizations

  • Bell Flight

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aerodynamic Control Surfaces
  • Aircraft Equipment
  • Aircraft Industry
  • Aircrafts
  • Airframes
  • Composite Materials
  • Control Panels
  • Control Systems
  • Deicing Systems
  • Helicopter Rotors
  • Helicopters
  • Materials Testing
  • Resonant Frequency
  • Rotary Wing Aircraft
  • Tail Rotors
  • Test And Evaluation
  • Test Methods

Readers

  • Aerospace Engineering
  • Structural Dynamics.